Motion appeared to be the theme of this year's E3 video game conference, as both Microsoft and Sony released their alternatives to Nintendo's Wii controller. But a close second would be 3D, as even Nintendo got into it with its 3D-capable handheld, the 3DS.

Cinema-goers today have a choice between 2D and 3D versions of a movie. But what if one day, the 3D Blu-ray movie version is also available, would this change their choice of wanting a 2D or 3D movie experience at the theater? What are the factors that will influence this decision?